ash/sysui/manifest.json

{
  "manifest_version":  1,
  "name": "mojo:ash_sysui",
  "display_name": "System UI",
  "capabilities": {
    "required": {
      "*": { "classes": [ "app" ] },
      "mojo:ash": {
        "interfaces": [
          "ash::mojom::ShelfLayout",
          "ash::mojom::UserWindowController"
        ]
      },
      "exe:chrome" : {
        "interfaces": [ "ash::sysui::mojom::WallpaperManager" ],
        "classes": [ "app_list:presenter" ]
      }
    }
  }
}